Evaporator



F. G. sLAG'ElY.

f EvAronATpn Aug. z2, 1933.

Original -Fled Auk. 13. 193() ,auf

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Patented' Aug. 22,1933

Evsrona'roa Frmkun c. sind. anni, N. Y.; mmm al Fedders ManufacturingCompany,Ino.,Builalo, N. Y.. aCorporation of New York 13, 193e. sex-mso. 415.034

ewedJanuary 10, 1933 A3 Claims. (01.62-128) f Application August l l EenThis invention relates, to mechanical refrigerating systems'and morelparticularly to. evaporators.

An object of the invention is to providey an 6 evaporator for mechanicalrefrigerating systems which serves to form ice forming enclosures aswell as absorbing heat from air circulating there- Another object ofthev invention' is to provide l an evaporator unit which includes tubesextending from the same'side of4 a header and bent to form a pluralityofpartially enclosed freezing chambers lengthwise of the header.

A further object of the invention is to provide l an evaporator formechanical refrigerating systems having freezing chambers formed rof aplurality of tubes formed of double parallel sections. Other objects ofthe invention will appear from the following description talrenl inconnection with the drawing, which forms a part of the specification andinwhich: y

Fig. 1 is a side elevational view of an evaporator incorporating theinvention, a portion thereof being broken away to show the refrigerantcontrol mechanism. v

Fig. 2 isarearendviewofthesame. Referring now to the drawing bycharacters of reference, 10 indicates a header, preferably formed ofsheet copper and having an open end 3- closed by plate 11. The plate issecured inleal: proof relation in any conventional manner and preferablycarries the connections leading tothe compressor and the condenser (notshown). An outlet opening 12 is formed through the upper portion of theplate, and an outlet-tube 13 extends` into the opening. Attached to theplate is a coupling 14 which is secured by cap' screws 15 in opencommunication with the opening `1,2, such coupling being ladapted to beconnected ,4 with la conduit (not shown) extending to the compressor..,An'inlet openingl extendsthroughthe lower portion of the plate and acoupling l'l is secured by the cap screws 18 to the plate so that itcommunicates with the opening. A suitable vconnection extends from thecoupling to the condenser. Reciprocable in the inlet opening is a needlevalve 1 19 which is connected to and controlled by an open oat 20 whichis pivoted at 2l to the interior of the end plate. The valve cooperateswith the apertured seat member 32 to control the flow of liquidrefrigerant into the header.

Ar: the refrigerant in the evaporator absorbs heat it gasees and isdrawn from the header through the tube 13 which is bent that its freeend is adjacent the interior bottom-of the sost. As'the liquidrefrigerant vaporises the float moves 'down allowing liquid refrigerantfrom the condenser to flow through the seat member because l the valveis unseated. and when the liquid body has been thus replenished, me hostposition win move the valve to close the aperture through the seatmember. It will thus be seen that a substantially constant body ofliquid refrigerant is maintained in the evaporator. It will also beundere6 stood that oil may travel in cycle with the liquid refrigerantand will move over the edge of the open oat in the same proportion tothe refrigerto provide parallel sections 23 extending transversely ofthe header axis, and with double parallel vertical sections 24 and-withdouble horizontal l sections 25. The vertical sections are formed allternately on opposite sides of the header and are Joined by thehorizontal-sections, thus forming superposed freezing chamber 26partially enclosed by the tubes and extending longitudinally o f the. eheader. The upper chamber is bounded onutwo sides by the tubes and on athird side by the header, while the other chambers `are bounded 'on 90threesidesbythetubes.- n y.

In order to provide a closure for pans, within the freezing chambers, Iutilise sheet sleeves 27. which extend longitudinally of the header andin intimate contact with the adiacent ma.' ne.; .95 tions. The uppersleeve is secured to the header by a plurality of-brackets as indicatedat 28.

Itwillbeseenthatthetubesformapluralltyl ofsuperposedice freezingenclosures, evaporator can-be economically manufactured 10 the tubes aresimilar and can be readily Immbled withtheheader. y l

Although this invention has been described in connection with certainspecific embodiments. the principles involved are susceptible -ofnumerous other applications which will readily occur to perf sonsskilledintheart, andtheinvmhtherefore to be limited only asindicetedllsmm of the appended claims. y What I claim is:

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l ilo cation with theliquid body, saidtubesbeingbenttofonnslmilardoubleverticalandhorizontalseotiomstoprovideaplumliwofl.. .u mg

chamba-s, the vertical sectionsv being alternatelydisposedonoppositesidesoftheheaderwhichvertiiwiththehorizontalsectionstormthewnllsotthefreezingchamhex.

"3. In en evaporate: for retrlgenting lheedei-.meanstormaintaimngabodyofliquid refxigerantintheheaderandaplmlityotsimilar tubeshsvingthe endsthereof connectedtothesamesldeoftheheederandinopeneommunicetinnwiththeliquidbodmsaidtubesbeingbenttoformsimilardoubleverticalandhorizontalseotionstomovideapluralityoisuperposedtreezlng chambers,the vertical seetions being yalternately onoppite sides of the header.and slves'extendinglongitudinallyinrelation-insaidfreezingchambersandhavins intimateeontactwiththeverticalandhorizontal sectiunsoi'sddtreezing chambers.-

FRANKLIN G. SLAGEL.

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